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WiN woodworking INTERNATIONAL 2019/4

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  • Woodworking magazine
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  • November
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  • Hardwood
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  • Germany
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WiN - woodworking INTERNATIONAL is the international magazine for the woodworking industry. We report on all aspects of woodworking from board materials, wood treatment to machines, tools and technical know-how, from timber engineering supplies to the latest developments in technologies and markets.

MACHINING TECHNOLOGY

MACHINING TECHNOLOGY Union Dual Lane Core Feeder The Union Tool Corporation offers a new Core Feeder for feeding plywood cores to engineered flooring laminating systems. The machine is designed to automatically feed two stacks of plywood cores up to 12” wide into Union Hot Melt Roller Coaters. The feeders utilize two independent lanes, which feed separately and on demand. Each lane holds its own hopper rack system that holds stacked cores. These can accommodate varying core widths. All cores are fed from the bottom of each stack via two independent pusher cylinders. These Core Feeders include core thickness plate adjustments to insure only one board from each lane is fed at one time. Cycle rates of 12 cores per lane per minute can be achieved. Engineered wood flooring systems also include a hot melt roller coater, lay-up conveyor and multi-nip roll machine. The hot melt roller coater coats plywood with adhesive and the lay-up conveyor allows a piece of veneer to be placed on top of the coated plywood. The multi-nip roll machine is then used for pressing the two pieces together. Engineered flooring is used as an alternative to hardwood flooring. Other coating/laminating systems are also available from Union Tool. www.uniontoolcorp.com Busse Focuses on 3D Technology Digitization and Reproduction of Components As one of the few tool manufacturers in Germany, Busse Heizplattentechnik GmbH uses modern reverse engineering via a 3D scanner. This enables the company to capture components completely as a digital 3D model and to create corresponding CAD files. Based on this data, Busse manufactures the complete tool from a single source. This enables the efficient and economical reproduction of special one-off parts and even worn components as well as the introduction of new developments. In addition, the system is transportable and can be used directly at the customer’s site. ”Missing construction data are not uncommon, especially with older components - for example with vintage cars. In such cases, the original part is our only working basis,” explains Axel Kleine-Heitmeyer, Sales and Project Manager at Busse. The elements for the process are located on a specially aligned table and are scanned in lanes by a 3D scan arm. This generates a digital point cloud, which the system then feeds into the computer for further processing. A reverse engineering software creates precise CAD data, i.e. surface data, based on the point cloud in practically all desired file formats. The reverse engineering process is significantly more precise than other techniques, such as photographic scan methods, and has several advantages. First of all, it is suitable for both small and large components of up to 2 x 1 meters in size. In addition, it works regardless of shape and material: Small plastic parts, wooden and locking parts as well as turned metal parts can be digitized as 3D models. The process can even be applied to worn components. The contours are reconstructed in advance, for example using a spatula, and then scanned. Complete tool construction or data provision ”The focus is always on the reproducibility of the components - either by the customer himself or by us. In addition to the mere provision of the data, we also supply the complete tool on request,” says Kleine-Heitmeyer. Usually, 20 to 25 working days elapse from order entry to completion. The reasons behind the inquiries are varying. They range from the reconstruction of classic designs to the introduction or testing of newly developed components to cataloguing for warehousing. Busse started manufacturing press tools for the woodworking industry and now uses the 3D technology to produce tools for vehicle parts, agricultural machinery components and foam parts for industry, furniture production, agriculture and other sectors. ”Thanks to the procedure, there are hardly any limits,” emphasizes Kleine-Heitmeyer. Digitization of a backrest: Using 3D scan technology, Busse manufactures fitting tools for veneer presses after digitizing the component. www.busse-heizplattentechnik.de 26 No. 4 • November 2019

MACHINING TECHNOLOGY Wood Optimization with Artificial Intelligence The Weinig LuxscanLine scanners are known worldwide for their reliability, accuracy and flexibility. With the new CombiScan Sense the Luxembourgish scanner specialist has set new benchmarks in four side wood defect detection. This scanner series is based on a single platform, adapted for all applications in solid wood manufacturing. By adding various software modules and optional sensors to the base model, you can extend the scanner to the ideal optimizing machine. The CombiScan Sense can be combined with various WEINIG machines for crosscutting, ripping and sorting. The new scanner features the powerful OptiCore AI Software. The newest generation of the software uses a new image processing method based on Deep Learning, a class of Neural Networks from the field of AI, to automatically analyse and identify wood defects. This results in a higher detection accuracy, improved detection repeatability with changing wood characteristics and reduced set-up time. Based on the exact board data obtained during image processing, OptiCore allows programming multiple qualities and zones tailored to your final product requirements. This means that almost all customer requirements can be taken into account and almost any type of end product can be manufactured. The quality of the sensor technology is the key to efficient scanning. Not only does the CombiScan Sense have faster cameras for better length resolution, but its high-resolution cameras also provide excellent width resolution, which ensures optimal detection of all kinds wood characteristics, including 3D surface defects. The wellknown dual scatter solution consisting of one line and one dot laser remains. This enables a highly accurate fibre analysis and ensures an optimal cutting position, as it is required especially in fingerjoint applications. The CombiScan Sense uses 4 specially positioned lasers to detect flat, non-vertical cracks. This so-called Angle Crack Module (ACM) provides crucial additional information for the detection of wood defects that are difficult to identify. New Weinig LuxscanLine CombiScan Sense: high-end scanner for various applications. Due to the advanced frame structure of the new CombiScan Sense, both the X-ray sensor and the Roughness+ sensor for unplanned areas can be combined for all-in-one scanning solution. In addition, the improved random width module can run up to 60 boards per minute. The optional, automatic camera positioning ensures maximum quality even in high-end applications and reduces operating errors to a minimum. The new CombiScan Sense can be effectively integrated into lines for various wood applications. The range of applications extends from combining the scanner with a cross-cut saw or a rip saw to a complex production line with several scanners. A pre-configured model variant is available for cutting, ripping and sorting. Designed as a modular system, the Weinig LuxscanLine scanner can be adapted to changing requirements at any time by exchanging or adding sensors. www.weinig.com The X-ray add-on features a completely redesigned low-power X-ray unit, which means that separate cooling is no longer necessary. The X-ray sensor identifies defects based on density differences. This option is not only useful for rough or dirty surfaces, but also for wood species with large colour variations. It can be used for density measurement and strength grading. Higher detection accuracy: the new OptiCore AI software uses Deep Learning for better results. No. 4 • November 2019 27

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